CN110395805A - A kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device - Google Patents
A kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device Download PDFInfo
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- CN110395805A CN110395805A CN201910694038.6A CN201910694038A CN110395805A CN 110395805 A CN110395805 A CN 110395805A CN 201910694038 A CN201910694038 A CN 201910694038A CN 110395805 A CN110395805 A CN 110395805A
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- 244000005700 microbiome Species 0.000 title claims abstract description 26
- 230000003014 reinforcing effect Effects 0.000 title claims abstract description 17
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- 239000004744 fabric Substances 0.000 claims abstract description 15
- 238000012856 packing Methods 0.000 claims abstract description 14
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 17
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 14
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 13
- 239000004917 carbon fiber Substances 0.000 claims description 13
- 229910001220 stainless steel Inorganic materials 0.000 claims description 13
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- 239000013049 sediment Substances 0.000 abstract description 2
- 230000004888 barrier function Effects 0.000 abstract 1
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- 238000012545 processing Methods 0.000 description 4
- 238000006722 reduction reaction Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000000470 constituent Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
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- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
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- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
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- 238000013459 approach Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/005—Combined electrochemical biological processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower or fuel cells
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Chemical & Material Sciences (AREA)
- Water Supply & Treatment (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Hydrology & Water Resources (AREA)
- Biodiversity & Conservation Biology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Molecular Biology (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses a kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical devices, including reactive tank, reactive tank inner wall both ends are provided with cloth water packing, cloth water packing back segment is followed successively by water layer, hypothallus, support packing layer, impervious barrier from top to bottom, root system of plant is located at hypothallus, and reacting has inlet and outlet in groove sidewall；Unit cathode, solar power supply apparatus, unit anode are additionally provided in reactive tank, unit cathode is located at root system of plant position, and solar power supply apparatus is located at reactive tank top, and unit anode part is located at hypothallus, is partially located at packing layer.Compared with prior art, a kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device of the invention, change persistence toxic pollutant form with sediment in-situ can be goed deep into situ, it further degrades at water outlet to it simultaneously, achieve the purpose that dual degradation of contaminant, have the advantages such as operation continuous-stable, and can effectively safeguard artificial swamp vegetation and pollutant removal.
Description
Technical field
The present invention relates to a kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical devices, belong to environmental technology field.
Background technique
Some chlorinatedorganics are widely former as a kind of important chemical industry in the industries such as medicine, pesticide, process hides, papermaking
Material, organic solvent and intermediate.In many industrial wastewaters, all there is this substance, there is strong, bio-toxicity of persistence etc.
Feature, though after wastewater treatment, still remaining has a certain concentration in tail water.Degradation of the tail water using artificial swamp, chlorine
It is just accumulated at muskeg root system position for organic matter.Chloro toxic organic compound (such as chlorophenols) permeable cell leads to toxicity
Accumulation and Mutagenesis.Water plant and rhizosphere microbial toxicity effect can occur under certain density toxicity chlorinatedorganic
It answers, vegetation activity in wetlands ecosystems is made to degenerate, lead to the efficiency decline of artificial swamp degradation nitrogen phosphorus.The whole world 60% it is artificial
Wetland is in the state of ecological degradation, the important origin cause of formation of artificial swamp disruption of ecological balance caused by wherein toxic pollutant accumulation is.
Therefore, very urgent with the processing work of toxicity organic pollutant for the maintenance of artificial swamp vegetation.
Currently, a kind of research of the Lu Shoubo et al. by power-on subsurface flow constructed wetland, in order to reach to current wetland
For the purpose of strengthening wetland water layer to the removal of pollutant, but the removal of the pollutant in root system maintenance and mud layer to muskeg
It is not directed to.Furthermore have to organo-chlorine pollutant processing mostly also using nitrate/nitrite etc. as electron acceptor
Accelerate the biological oxidation organo-chlorine pollutant is promoted to decompose, such method electron acceptor has in wetland bed mud-water environment
Mobility can play organo-chlorine pollutant Degradation and Transformation with some artificial swamp surface layers.But research has shown to provide at present
Electron acceptor often avoid selecting the small organic molecule easily restored to contaminant degradation；For by chlorinatedorganic pollution compared with
Deep mud layer also lacks the effect of depth reparation.
Microorganism electrolysis cell (MEC) is a kind of electro-chemical systems for converting electrical energy into chemical energy, mainly using additional
Electric energy assists a kind of bioelectrochemistry technology of micro-reduction or oxidation substrates.Microorganism electrolysis cell working principle: microorganism
Microorganism in electrolytic cell, in its metabolic process, then electronics passes through from extracellular unit anode has been transferred into the cell
External circuit reaches unit cathode under the potential difference effect that power supply provides.In unit cathode, electronics participates in reduction reaction.
The direction of microorganism electrolysis cell (microbial electrolysis cells, MECs) focuses primarily upon hydrogen manufacturing,
Later MECs develops the application form of collection production capacity and pollution administration, to solve to provide one when energy problem and pollution control
The new solution of kind, the extensive concern by scientists from all over the world.It is pollutant-contaminated problem for the bed mud of artificial swamp, is needed
Large-scale effectively engineer application processing method.Therefore, the present invention realizes low cost, efficient place using microorganism electrolysis cell
The method managed pollutant and safeguard root system, is widely used in pollution treatment engineer application.
Summary of the invention
The technical problem to be solved in the invention is that in view of the above shortcomings of the prior art, and it is latent to provide a kind of reinforcing level
Flow wetland microorganism electrochemical device.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device, including reactive tank, the reactive tank inner wall are provided with for one week
Cloth water packing is followed successively by water layer, hypothallus, support packing layer, root system of plant position in the reaction zone in cloth water packing from top to bottom
In hypothallus, reacting has inlet and outlet in groove sidewall, and inlet and outlet are located at cloth water packing；The reaction
Unit cathode, solar power supply apparatus, unit anode are additionally provided in slot, the unit cathode is located at root system of plant position, institute
It states solar power supply apparatus and is located at reactive tank top, the unit anode part is located at hypothallus, partially it is located at support packing layer,
Cathode wire is equipped between the unit cathode and solar power supply apparatus, between the solar power supply apparatus and unit anode
Equipped with positive wire.
Scheme as a further preference, the unit cathode are that several stainless steel shaft carbon fiber brushes intersect the netted of establishment
Structure, the stainless steel shaft carbon fiber brush are made of stainless steel wire and four strands of carbon fiber twists.
Scheme as a further preference, the unit anode include at least three steel skeletons arranged side by side, steel skeleton
Interior arrangement is placed with several graphite blocks, and graphite block periphery is enclosed with carbon cloth.
Scheme as a further preference, the solar power supply apparatus have cathode integrated circuit board and the integrated electricity of anode
Road plate, the unit cathode are connected to cathode integrated circuit board, and the unit anode is connected to positive integrated circuit board.
Scheme as a further preference, the unit anode are located at close to the position of reactive tank water outlet.
Compared with prior art, the present invention, which safeguards, strengthens horizontal wetland microorganism electrochemical processing toxicity organic pollutant dress
It sets for sludge high concentration toxic pollutant near vegetation root system of degrading, sediment in-situ removal persistence toxicity can be goed deep by having
Pollutant, while further degrading at water outlet reaches first reduction and changes form of poluttants, toxicity and bio-degradable, again
The purpose of the dual degradation of contaminant further aoxidized, the advantages such as operation continuous-stable, and can effectively safeguard that artificial swamp is planted
Quilt and pollutant removal, have the advantage that
One, unit cathode can deeply continuously convert chloro toxicity organic pollutant rich in the higher sludge blanket of pollutant concentration
For nothing/low bio-toxicity product, root system of plant ambient contamination object concentration is reduced.
Two, the present invention carries out yin-yang the two poles of the earth using chloro pollutant biology in electrode strengthened artificial wet land root system of plant bed mud
Pollutant remove simultaneously, cathode can achieve the dechlorination effect of organo-chlorine pollutant, and anode can be by the pollution of cathode dechlorination
Object, further oxidative degradation can be carried out for artificial-strengthening downlink current wetland by the higher sludge blanket of chloro pollutant concentration deep
Degree conversion, can be for longtime running and there are the artificial swamp restorations of the ecosystem of persistent organism accumulation to provide solution and technology
Approach.
Three, it the present invention relates to the multidisciplinary field such as microbiology, electrochemistry, molecular ecology, process, is proposed
Research ideas and methods equally there is novelty.
Four, microorganism electrochemical recovery technique is with easy to repair, low in cost, equipment is simple, does not cause secondary pollution
The advantages that, and to the environmental-friendly, reasonable and effective of machine contaminated soil remediation, it is able to achieve deep conversion chloro toxicity organic contamination
Object is the catabolite of biology toxicity low/no, increases the duration and controllability of biological reinforced repair process.
Five, the stretching plastic of unit cathode material can effectively agree with the shape of different vegetation root systems, protect with root system is prepared
Effective distance is held, realizes the single protection of root system, can effectively solve the problem that the problem of artificial swamp toxic pollutant influences.
Six, unit cathode and unit anode use modularized design, can be flexibly matched with Wetland Area, effectively right
Wetland is strengthened.
Seven, this system can be carried out energy supply operation using the sun, and no additional-energy realizes the effective use of the energy, and
The self-supporting capability of system.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is electrochemical appliance layout of the present invention；
Fig. 3 is the compilation process figure of stainless steel shaft carbon fiber brush；
Fig. 4 is the compilation process figure of unit cathode；
Fig. 5 is the compilation process figure of unit anode；
Fig. 6 is working efficiency figure of the invention.
Specific embodiment
The optimal technical scheme that the invention will now be described in detail with reference to the accompanying drawings.
A kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device of the invention, is related to the oxygen reduction of microorganism electrolysis cell
Change process solves the accumulation of level stream current wetland bed mud and the persistence organo-chlorine pollutant of middle and high concentration occurs, influences plant
Root system metabolic enzyme activity causes root system to rot to lead to root system rotten the problem of influencing artificial wetland treatment tail water function；It can be by one
The unit cathode of the kind horizontal wetland microorganism electrochemical maintenance device of reinforcing is placed in the wetland influenced by organo-chlorine pollutant
In bed mud near root system of plant, unit anode is disposed adjacent to artificial swamp collected water outlet leading portion, is connected respectively using two conducting wires
The anode of the cathode and unit anode and solar power supply apparatus of order position cathode and solar power supply apparatus.Cathode can achieve
The dechlorination effect of organo-chlorine pollutant, anode can be by the pollutant of cathode dechlorination, further oxidative degradations.
A kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device of the invention, including unit cathode 11, cathode wire
12, solar power supply apparatus 13, positive wire 14 and unit anode 15.
Unit cathode 11 is 7 stainless steel shaft made of squaring of 0.25mm stainless steel wire 6 and 30mm carbon fiber
Carbon fiber brush 8, several stainless steel shaft carbon fiber brushes 8 work out 10m × 10m reticular structure with the grid of 30mm × 30mm；
Unit anode 15 is the side by the graphite block 9 of steel skeleton 51 and 5cm-10cm by stacking and being wrapped up by carbon cloth 10
Formula is composed, and steel skeleton 51 is by a height of 20cm of layer, a length of 60cm, the structure of steel wire liner multilayer titanium wire network that width is 40cm
It is formed by connecting；Cathode wire 12 is synthesized by the way of in parallel by multiply inner lead, and the wire of inner lead is equably
It is connect with the mutual twist of unit cathode 11；Positive wire 14 synthesizes in the form of internal multiple conducting wires are in parallel, internal each anode
Conducting wire 14 has connected constituent parts anode.
Unit cathode 11 is connected by cathode wire 12 with the cathode integrated circuit board of solar power supply apparatus 13, unit sun
Pole is connected by positive wire 14 with the positive integrated circuit board of solar power supply apparatus 13.
Fig. 3 is unit cathode internal structure stainless steel wire axis carbon fiber brush schematic diagram, and 6 in figure are stainless steel wire, and 7 be carbon
Fiber, 11 be unit cathode, and the A expression in figure is synthesized by way of squaring.
Fig. 4 is the structural schematic diagram of unit cathode, and 8 be stainless steel wire axis carbon fiber brush, and 1 is unit cathode, and B indicates establishment
Mode.
Fig. 5 is the unit anode construction schematic diagram of Fig. 1, and 10 in figure are carbon cloth, and 9 be certain specification side length be 5-
The graphite block of 10cm, 51 be steel skeleton, and for placing the graphite block of carbon cloth package, 15 be unit anode, the C table in figure
Show and is formed by way of stacking and wrapping up；
The region area that unit cathode 1 covers maintenance is 10m × 10m, can be determined according to muskeg coverage condition, institute
The unit unit cathode quantity that need to be come into operation, every block unit cathode give cloth voltage 0.8v；
Unit anode is the steel skeleton that the high 20cm of layer, long 60cm, width 40cm are stacked by the graphite block that side length is 5cm -10cm
51 titanium lined silk screen layers are simultaneously wrapped up by carbon cloth, since the size of graphite block is inhomogenous, and good water permeability, to water outlet
Without hindrance effect；Unit anode is oxidation reaction because its progress, causes unit anode graphite that a degree of degeneration occurs, therefore
Choosing has excellent toughness and inert titanium wire network, facilitates the internal graphite block of update.
Circuit integration plate is set in solar power supply apparatus 13, is connected respectively with unit cathode wire and unit positive wire,
And per share inner lead gives stable 0.8v DC voltage, and solar panels are placed in sun-drenched place.
A kind of chloro toxicity organic pollutant of reinforcing horizontal subsurface flow wetland microorganism electrochemical device of the invention is handled
Method and step is as follows:
For the horizontal subsurface flow wetland of different area, the muskeg area that can will be influenced by middle and high concentration organo-chlorine pollutant
The unit cathode of matched number carries out tiled arrangements, carries out modularization maintenance, strengthens horizontal wetland microorganism electrification for a kind of
The unit cathode for learning maintenance device is placed under the horizontal wetland of protected reinforcing, since reticular structure has good plasticity,
Situation can be extended according to different vegetation root systems, adapt the shape of unit cathode 11, make it close to vegetation root system；Cathode wire 12
Positive wire 14 is respectively positive and negative anodes integrated circuit in each unit cathode 11 and unit anode 15 and solar power supply apparatus 13
Plate is connected；Constituent parts anode 15 is respectively placed in the exit of the collecting system of horizontal subsurface flow wetland.
Since reticular structure has good plasticity, situation can be extended according to different vegetation root systems, adapt unit cathode
Shape, make it close to vegetation root system；Constituent parts anode is respectively placed in the near exit of each collecting system of artificial swamp, the sun
Energy power supply unit, which provides, stablizes branch voltage 0.8v, runs 10d, obtains the water body of removal pollutant and the bottom for removing pollutant
Mud carries out the dual Degradation and Transformation of bioelectrochemistry using chloro toxic pollutant in electrode strengthened artificial wet land root system of plant bed mud
Cathode can achieve the dechlorination effect of organo-chlorine pollutant, and anode can be by the pollutant of cathode dechlorination.
Embodiment one: the artificial swamp of 30L is taken to be placed in reactor by the sludge that toxic organic compound pollutes, then into reactor
10L water is added；A kind of unit cathode 11 for strengthening horizontal wetland microorganism electrochemical maintenance device is placed in sludge deep 10cm
Place；Before unit anode 15 is arranged in outlet, partially it is located in sludge substrate, is partially located in bottom support filler 5；It will catchment
The outlet of nozzle apparatus for placing tail portion, the cathode of unit cathode 11 and solar power supply apparatus 13 has been connected with cathode wire 12, is used
Positive wire 14 connects the anode and unit anode 15 of solar power supply apparatus 13, runs reactor.
Runing time is 200min in embodiment one, and the auxiliary voltage of solar power supply apparatus is 0.4V, logical by changing
Electric time, specific conduction time are respectively comparison 4- pollutant in the case where 60min, 90min, 120min, 150min, 180min
Removal efficiency, specific efficiency such as Fig. 6.By observation figure it is found that when voltage is 0.4V, conduction time 60min, removal efficiency
Be 83.1%, the treatment effeciency of 4- pollutant gradually increases as time increases, when energized between processing when reaching 120 min
Efficiency peak is 88.8%.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not limited to this hair the foregoing is merely a specific embodiment of the invention
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (5)
1. a kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device, it is characterised in that: including reactive tank (1), the reaction
Slot (1) inner wall both ends are provided with cloth water packing (2), be followed successively by from top to bottom in the reaction zone in cloth water packing (2) water layer (3),
Hypothallus (4), support packing layer (5), root system of plant are located at hypothallus (4), have water inlet and water outlet on reactive tank (1) side wall
Mouthful, inlet and outlet are located at cloth water packing (2)；Unit cathode (11), solar energy are additionally provided in the reactive tank (1)
Power supply unit (13), unit anode (15), the unit cathode (11) are located at root system of plant position, the solar power supply apparatus
(13) it is located at reactive tank (1) top, the unit anode (15) is partially located at hypothallus (4), is partially located at support packing layer
(5), cathode wire (12) are equipped between the unit cathode (11) and solar power supply apparatus (13), the solar powered dress
It sets and is equipped with positive wire (14) between (13) and unit anode (15).
2. a kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device according to claim 1, it is characterised in that: described
Unit cathode (11) is the reticular structure that several stainless steel shaft carbon fiber brushes (8) intersect establishment, the stainless steel shaft carbon fiber brush
(8) it is made of stainless steel wire (6) and four strands of carbon fiber (7) twists.
3. a kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device according to claim 1, it is characterised in that: described
Unit anode (15) includes at least three steel skeletons (51) arranged side by side, and arrangement is placed with several graphite blocks in steel skeleton (51)
(9), graphite block (9) periphery is enclosed with carbon cloth (10).
4. a kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device according to claim 1, it is characterised in that: described
Solar power supply apparatus (13) has cathode integrated circuit board (15) and positive integrated circuit board (16), the unit cathode (11)
It is connected to cathode integrated circuit board (15), the unit anode (15) is connected to positive integrated circuit board (16).
5. a kind of reinforcing horizontal subsurface flow wetland microorganism electrochemical device according to claim 1, it is characterised in that: described
Unit anode (15) is located at close to the position of reactive tank (1) water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910694038.6A CN110395805B (en) | 2019-07-30 | 2019-07-30 | Microbial electrochemical device for strengthening horizontal subsurface flow wetland |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910694038.6A CN110395805B (en) | 2019-07-30 | 2019-07-30 | Microbial electrochemical device for strengthening horizontal subsurface flow wetland |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110395805A true CN110395805A (en) | 2019-11-01 |
| CN110395805B CN110395805B (en) | 2024-01-23 |
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